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Hoisting device and its hydraulic system, method of use and operating machinery

A hoisting device and hydraulic system technology, applied in the field of hoisting device and its hydraulic system, working machinery, can solve problems such as accidents caused by electric control, and achieve the effect of protecting safety and reliable emergency operation

Active Publication Date: 2022-05-03
SANY AUTOMOBILE HOISTING MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a hoisting device and its hydraulic system, usage method and operating machine, which are used to solve the problem that electric control failure easily causes accidents in the prior art and improve the safety of the hoisting device

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  • Hoisting device and its hydraulic system, method of use and operating machinery
  • Hoisting device and its hydraulic system, method of use and operating machinery
  • Hoisting device and its hydraulic system, method of use and operating machinery

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Embodiment Construction

[0043] The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings and embodiments. The following embodiments are intended to illustrate the present invention, but can not be used to limit the scope of the present invention.

[0044] In the description of embodiments of the present invention, it should be noted that the term "center", "longitudinal", "horizontal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and other indications of the orientation or position relationship is based on the orientation or position relationship shown in the drawings, only to facilitate the description of embodiments of the present invention and simplified description, and not to indicate or imply that the means or elements must have a particular orientation, Constructed and operated in a particular orientation, and therefore can not be construed as a limitation of embodim...

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Abstract

The invention provides a hoisting device, a hydraulic system thereof, a use method and a working machine. The hydraulic system of the hoisting device includes a first oil source connected to the pilot control valve, and the first oil source is suitable for being connected to the hoist motor through the pilot control valve and the first oil circuit and the second oil circuit; two electromagnetic proportional valve, two electromagnetic proportional valves are respectively connected with the pilot part of the pilot control valve, and are used to control the reversing of the pilot control valve; the second oil source is connected to the first valve port of the manual ball valve through the third oil circuit, and the second port of the manual ball valve The second valve port is connected to the winch brake; the switch, the switch has two connecting contacts, and the two connecting contacts are respectively connected to the two electromagnetic proportional valves; the third oil source is connected to the two electromagnetic proportional valves, the first The oil passage and the second oil passage are suitable for switching the connection mode with the pilot part of the pilot control valve based on the operation of the two connection contacts. The hydraulic system of this hoist unit enables safe and reliable emergency operation.

Description

Technical field [0001] The present invention relates to the technical field of construction machinery, in particular to a hoist device and a hydraulic system thereof, a method of use and operating machinery. Background [0002] With the development of construction machinery, taking the crane as an example, the operation of the crane puts forward more comfortable, more safe and reliable requirements, in order to meet the comfort, now more and more crane hydraulic systems, especially high-end models, almost all use full electronic control system. [0003] In the operating system of this crane, the addition of electronic control elements also reduces the reliability of the hydraulic system. In the process of lifting or dropping heavy objects in the crane, if the control system fails, the crane and the hoist may be in a dangerous state, and in severe cases, the overturning accident may be caused by changes in external conditions. Contents of the Invention [0004] The present inven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/08B66D1/54F15B11/08F15B11/04
CPCB66D1/08B66D1/54F15B11/08F15B11/04
Inventor 邹砚湖安江胜田敬中
Owner SANY AUTOMOBILE HOISTING MACHINERY
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